<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .one{
            background-image: url(./图片/T90M.jpg);
            background-size: cover;
            background-repeat: no-repeat;
            font-size: 40px;
            line-height: 60px;
        }
        .two{
            width: 200px;
            height: 100px;
            background-color: orange;
            color: white;
            text-align: left;
            line-height: 100px;
            border-radius: 10px;
            border: 5px blue solid;
            box-sizing: border-box;
            margin-bottom :10px;
        }
        .three{
            width: 200px;
            height: 100px;
            background-color: yellow;
            box-sizing: border-box;
            border: 3px black solid;
        }
        .four{
            width: 50px;
            height: 50px;
            background-color: red;
            margin-left: auto;
            margin-right: auto;

        }
    </style>
</head>
<body>
    <!--<div class="one"> 
            Lorem ipsum dolor sit amet consectetur adipisicing <br>
            elit. Dicta qui reprehenderit in non eius amet nihil ab, id quo rerum ex voluptate impedit officia necessitatibus 
            repellendus modi enim debitis error?
    </div>-->
    <div class="two">
        这是一个段落
    </div>

    <div class="three">
        <div class="four">
            这是一个段落
        </div>
    </div>


</body>
</html>